Glue head for corrugated board box folding machine



Sept. 1, 1959 F. A. CONNOLLY GLUE HEAD FOR CORRUGATED BOARD BOX FOLDINGMACHINE Filed Jan. 10, 1957 5 Sheets-Sheet l Sept. 1, 1959 F. A.CONNOLLY 2,902,000

GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINE Filed Jan. 10, 1957 I3 Sheets-Sheet 2 Se t. 1, 19-59 I F. A. CONNOLLY 2,902,000

GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINE 5 Sheets-Sheet 3Filed Jan. 10, 1957 GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINEFrancis Allen Connolly, Astoria, N.Y., assignor to S & S CorrugatedPaper Machinery Company, Inc., Brooklyn, N.Y., a corporation of New YorkApplication January 10, 1957, Serial No. 633,475

4 Claims. (Cl. 118-200) This invention relates to corrugated board boxfolding machines and more particularly to gluing devices for spreadingglue on the flaps of boxes.

It is an object of the invention to provide a simple and elfective meansof selectively spreading glue on either the upper or lower surfaces offlaps as they enter the machine.

Another object of the invention is to provide a glue head for spreadingglue on selected flaps while at the same time protecting other flapsfrom being soiled by the gluespreading process.

It is an additional object of the invention to provide a glue head whichmay be readily applied to a standard corrugated board box foldingmachine in an oriented position for selective glue-spreading on flaps.

Briefly, the invention comprises a pair of glue rollers each having itsrespective housing. Each combination of a glue roller and housingconstitutes an integral unit wherein they are mates in the sense ofbeing mirror images of each other. Thus, one unit can be substituted forthe other unit, depending upon whether it is desired to spread glue on asurface below the roller or above the roller. In each instance, thehousing for the roller surface has a guard to prevent other surfacesfrom becoming glue contaminated while a box flap is passing incontiguity with a roller.

A detailed description of the invention will now be States Patent givenin conjunction with the appended drawings in which:

Figure 1 shows an elevation of a fragment of a corrugated board boxfolding and gluing machine wherein the invention is incorporated.

Figure 2 shows a magnified portion of the machine shown in Figure 1,wherein the one glue roller unit is shown in position for spreading glueon a flap passing below the roller.

Figure 2a is similar to Figure 2 except that the mating unit has beensubstituted for spreading glue on a flap passing above the roller.

Figure 3 is a section through 3--3 of Figure 2.

Figure 4 is a perspective of a bracket arm bolted to the machine whichserves to hold either of the roller Figure 5 is a perspective of one ofthe roller units devised for spreading glue on flaps passing below theroller.

Figure 6 is a section through 66 of Figure 5.

Figure 7 is the mating roller unit devised for spreading glue on a flappassing above the roller.

Figure 8 is a diagrammatic cross-section showing the relative positionof the roller and the housing guard'when spreading glue on a flappassing thereabove.

Figure 9 is a diagrammatic illustration similar to Figure 8 but showingthe orientation of the flap and the mating roller unit for spreadingglue on a flap passing therebelow.

Referring to Figure l, a box folding and gluing machine 10 is disclosedin its basic components wherein the location of the invention withrespect to surrounding parts is indicated at 15. Thus, the rollerhousing 20 and roller Patented Sept. 1, 1959 ice 24 as a unit will beseen to be secured to an adjustment and pressure mechanism 30 anddisposed above a delivery belt 34 and a pressure roller 38. Anadditional pressure roller 42 of standard construction is provided whichacts in conjunction with the other mating unit to be hereinafterdisclosed.

The pressure roller 38 acts in conjunction with the glue roller unit asshown in position on Figure 1, all in a manner which will be understoodto persons skilled in the art. Thus, whichever of the roller units isused, either for spreading glue below the roller or above the roller, apressure roller is provided to hold the folded over flaps of the cartonagainst the glue charged roller of the roller unit. Referring now toFigure 2, the particular roller unit as illustrated in Figure 1 is shownto an enlarged scale wherein it will be clearly seen that the roller 24is exposed for contact with flaps passing therebelow and wherein themode of attachment of the roller unit as by means of bolt 46 andlocating pins 50 and 52. A keeper arm 126 is provided which closes theexterior face of the roller unit in a manner to be hereinafter disclosedin detail and supports the outboard end of the roller unit.

In Figure 2a the mating roller unit having housing guard 20 and theroller 24' is illustrated, which roller acts in conjunction with thepressure roller 42 as hereinabove explained. Thus, it will be apparentby comparing Figures 2 and 2a and more particularly from considerationof Figures 5 and 7 that the roller units are mirror images of each otherand consist of a housing which serves as a glue chamber as well as aguard in which the roller is fully protected and wherein only theexposed portion of the roller as shown in Figure 6 emerges for operationon passing flaps. The rollers are mounted on respective shafts 60 and 60which have bearing support in the ends of the respective housing. Eachshaft is connectable with a flexible rotary shaft 64 as shown in Figure3 when the roller unit is installed.

It will be apparent that, since the rollers 24 and 24 must rotate inopposite directions, means is provided for producing reversible rotationof the flexible shaft 64. This will be understood to be accomplished atthe input end (not shown) of the flexible shaft to either of two sourcesof rotary power turning in opposite directions.

As seen in Figure 3, each roller is carried on its respective shaft andis fastened thereto as by a set screw68. The shaft '60 is slotted at 72to take a tongue 76 of the flexible shaft 64, the same expedient beingunderstood to be utilized for shaft 60'.

One end of each housing is provided with ports 80 and 84 as shown inFigure 6 which connect with respective glue ducts 88 and 92, as shown inthe mounting bracket 93 of Figure 4. The outer face of each roller unitis provided with a pair of locating pins 50 and 52 as shown in Figure 2,the pins being designated by primed reference characters in Figure 7.Respective threaded bores and 100 are provided for accommodating afastening bolt to be hereinafter described.

It will thus be seen from consideration of Figures 5 and 7 that theroller units constitute what may be termed a left and a right, or anupper and a lower, and that each consists simply of an integral casting,for example of bronze, suitably bored to provide bearing supports for ashaft which supports the respective roller. The locating pins may besimple studs force-fitted into bores provided in the face of thecasting. Further details of the construction will be apparent to personsskilled in the art and no further description thereof is deemednecessary here.

Referring to Figure 4, an exploded perspective is shown of the mountingbracket 93 which will be seen to have a body comprising a bore and asupport arm 114. The body is further bored to take glue ducts 88 and 92which emerge to coact with the ducts 80 and 84 so that when the shaft 60or 60 is thrust into bearing support position in bore 110 the duct endsline up and slide readily into bores 80 and 84. In order that thereshould not be an excess of glue in the reservoir that could flow out,the diameter of inlet 88 should be less than and preferably about halfthat of 92. Moreover, outlet 92 should be above the bottom of housingguard roll -20.

Standard 118 is integral with the support bracket and is provided withbolt holes such as 120 for fastening to the machine. Suitable locatingpins such as 122 may be provided. Either roller unit is kept in positionrigidly by means of the keeper 126 having a pair of bores 128 and 130into which slide the pins 96 and 98, or the pins 96 and 98', which holdthe respective roller unit in proper alignment with the keeper element.A through bore 134 is provided through which a bolt 46 may pass forcoacting with the threaded bores 100 or 100 of the housing guards. Theend of the arm 114 is provided with a threaded bore 140 to coact with afastening bolt 144 passing through a through-bore 146 in the keeperelement whereby that element, supporting the outboard end of a rollerunit, is securely fastened to the arm 114 and thus to the machine.

It will be understood that the glue ducts 92 and 98 are connected with acirculating source of glue in a manner heretofore known. Thus, each ofthe housing guards forms a glue chamber whereby the respective roller isconstantly immersed as to a portion of its surface in glue for spreadingon a flap surface passing above the roller as shown in Figure 8 or belowthe roller as shown in Figure 9. It will be apparent from comparison ofFigures 8 and 9 that regardless of which roller unit is in use, theguard housing protects the opposite flap of the carton from becomingglue contaminated. Thus, in Figure 8 the guard housing 20 isintermediate the dry flap and the roller, while in Figure 9 the guardhousing 20 is intermediate the dry flap and roller.

The particular shape of the housing guards, by virtue of being taperedand rounded as shown, permits smooth sliding of the carton surfacestherepast without any abrupt changes in configuration which mightotherwise cause snagging. It will be further noted that the keeper has aperipheral bevelled edge 150 which blends into the bevelled edges ofeither of the housing guards so that a smooth and continuous outline ispreserved. Thus, as viewed in Figure 3 the bevelled edge of the keeper126 is shown in a smooth continuous line with the bevelled edge of thehousing guard 20, the same being true of housing 20'.

Having thus described my invention I am aware that various changes maybe made without departing from the spirit thereof and accordingly I donot seek to be limited to the precise illustration herein given exceptas set forth in the appended claims.

I claim:

1. A glue applying device for a carton folding and gluing machine,comprising a roller unit, including a roller and a housing surroundingsaid roller wherein said roller is exposed for a predetermined portionof its periphery, means for selectively interchanging said roller unitwith another roller unit also including a housing and a roller securedthereto, said housings being mirror images of means for securing saidunits to a machine comprising a bracket having a pair of glue flowpassages therethrough, said roller units each having a pair of glue flowports in the respective housing thereof registerable in said passages,and means for clamping either of said units to said bracket.

2. A glue applying device for a carton folding and gluing machine,comprising a roller unit, including a roller and a housing surroundingsaid roller wherein said roller is exposed for a predetermined portionof its periphery, said portion comprising less than half of the circularlength of said periphery, said housings being mirror images of eachother whereby one unit roller is operative to contact boxes passingtherebelow and the other unit roller is operative to contact boxespassing thereabove, in cluding a support bracket for securing either ofsaid roller units to a machine, said support bracket comprising a yokefor straddling either of said housings and means for securing a housingto said yoke, said bracket having a bore, each roller having a rotaryshaft extending therefrom through a wall of said housing and beingdisposable in said bore for bearing support therein, said bracket havingglue flow means extending therethrough, each of said roller unithousings having glue flow means registerable with said bracket glue flowmeans.

3. A glue applying device for a carton folding and gluing machine,comprising a roller unit, including a roller and a housing surroundingsaid roller wherein said roller is exposed for a predetermined portionof its periphery, means for selectively interchanging said roller unitwith another roller unit also including a housing and a roller securedthereto, said housings being mirror images of each other whereby oneunit roller is operative to contact boxes passing therebelow and theother unit roller is operative to contact boxes passing thereabove,including a support bracket for securing either of said roller units toa machine, said support bracket comprising a yoke for straddling eitherof said housings and means for securing a housing to said yoke, saidbracket having a pair of parallel bores for glue flow, each of saidhousings having a pair of glue flow bores registerable with respectiveglue flow bores of said bracket.

4. A glue applying device for a carton folding and gluing machine,comprising a roller unit, including a roller and a housing surroundingsaid roller wherein said roller is exposed for a predetermined portionof its periphery, means for selectively interchanging said roller unitwith another roller unit also including a housing and a roller securedthereto, said housings being mirror images of each other whereby oneunit roller is operative to contact boxes passing therebelow and theother unit roller is operative to contact boxes passing thereabove,including a support bracket for securing either of said roller units toa machine, said support bracket comprising a yoke for straddling eitherof said housings and means for securing a housing to said yoke, saidbracket having a bore, each roller having a rotary shaft extendingtherefrom and being disposable in said bore for hearing support therein;said bracket having a pair of parallel bores for glue flow, each of saidhousings having a pair of glue flow bores registerable with respectiveglue fiow bores of said bracket.

References Cited in the file of this patent UNITED STATES PATENTS913,008 Herr Feb. 23, 1909 1,094,139 Forte Apr. 24, 1914 2,787,244Hickin Apr. 2, 1957

